This is such an interesting point, if the restaurant is your turf and you warn people that there is no cell phone use, or smoking, is not that OK?
Or if you tell patrons to go outside to receive calls, or to smoke, which was quite an issue in our town. And now if you want to smoke, you have to go out and stand on the wing, oh, I mean just leave and go outside. (Thats the way its been in our house way before these rules ever happened anyway.)
And we all know that we have to be in contact with our families, police, fire and more, but about 15 years ago, we were, just not in an invasive mode.
This is such an interesting topic, there were some letters in our paper supporting both sides.
And there are enough restaurants in town that the people who are umbilically connected to their phones, can easily go elsewhere to dine.
Both sides, but if I owned the place, I would post a sign, to have the smokers and cellphone yakkers just to step outside, and if they didnt like it, then just leave.